From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-ob0-f175.google.com (mail-ob0-f175.google.com [209.85.214.175]) by kanga.kvack.org (Postfix) with ESMTP id 500026B0036 for ; Thu, 13 Mar 2014 12:50:11 -0400 (EDT) Received: by mail-ob0-f175.google.com with SMTP id uy5so1311245obc.34 for ; Thu, 13 Mar 2014 09:50:11 -0700 (PDT) Received: from e9.ny.us.ibm.com (e9.ny.us.ibm.com. [32.97.182.139]) by mx.google.com with ESMTPS id iz10si3052008obb.130.2014.03.13.09.50.10 for (version=TLSv1 cipher=RC4-SHA bits=128/128); Thu, 13 Mar 2014 09:50:10 -0700 (PDT) Received: from /spool/local by e9.ny.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Thu, 13 Mar 2014 12:50:09 -0400 Received: from b01cxnp22035.gho.pok.ibm.com (b01cxnp22035.gho.pok.ibm.com [9.57.198.25]) by d01dlp02.pok.ibm.com (Postfix) with ESMTP id 2C1456E804B for ; Thu, 13 Mar 2014 12:50:02 -0400 (EDT) Received: from d01av04.pok.ibm.com (d01av04.pok.ibm.com [9.56.224.64]) by b01cxnp22035.gho.pok.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id s2DGo7Bq7012804 for ; Thu, 13 Mar 2014 16:50:07 GMT Received: from d01av04.pok.ibm.com (localhost [127.0.0.1]) by d01av04.pok.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id s2DGo72A030720 for ; Thu, 13 Mar 2014 12:50:07 -0400 Date: Thu, 13 Mar 2014 09:49:50 -0700 From: Nishanth Aravamudan Subject: Re: Node 0 not necessary for powerpc? Message-ID: <20140313164949.GC22247@linux.vnet.ibm.com> References: <20140311195632.GA946@linux.vnet.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Sender: owner-linux-mm@kvack.org List-ID: To: Christoph Lameter Cc: linux-mm@kvack.org, linuxppc-dev@lists.ozlabs.org, anton@samba.org, rientjes@google.com, benh@kernel.crashing.org On 12.03.2014 [08:41:40 -0500], Christoph Lameter wrote: > On Tue, 11 Mar 2014, Nishanth Aravamudan wrote: > > I have a P7 system that has no node0, but a node0 shows up in numactl > > --hardware, which has no cpus and no memory (and no PCI devices): > > Well as you see from the code there has been so far the assumption that > node 0 has memory. I have never run a machine that has no node 0 memory. Do you mean beyond the initialization? I didn't see anything obvious so far in the code itself that assumes a given node has memory (in the sense of the nid). What are your thoughts about how best to support this? Thanks, Nish -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org